Several Questions: 1. When Oracle writes a before image to a rollback
segment, is it writing only the row being modified, or is it writing the
entire datablock? 2. Does a SCN apply only to the row on a data block being
modified, or to the entire block? 3. Multiple transactions can use the same
rollback segment, but under what conditions, if any, can multiple
transactions use the same extent in a particular rollback segment?
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Received on Tue Feb 02 1999 - 10:19:33 CST
